*{
    margin: 0;
}

.container{
    width: 1400px;
    margin: 10px auto;
}
.header{
    height: 80px;
    background: aqua;
}

.nav{
    height: 80px;
    background: aqua;
    margin-top: 10px;
}

.content{
    margin-top: 10px;
    height: 600px;
}
.content .left{
    float: left;
    width: 900px;
    height: 600px;
    background-color: aqua;
}
.content .right{
    float: right;
    width: 480px;
    height: 600px;
    background-color: aqua;
}

.footer{
    height: 80px;
    background-color: aqua;
    margin-top: 10px;
}